Additional names

Sexing this fish is not easy and involves physical contact as follows; turn fish on to its back, head facing you, be careful to avoid dorsal spine by placing it between your fingers. Gently pull down on the tail to arch the back and examine the genital pore. Males have a ridged papillae with a spermatoduct and gravid females have a oviduct on the ventral side of the extended papillae.